As we wave goodbye to the colder weather, we also wave hello to bikini season. Fortunately, there's no better time to whittle your waist for tummy-baring tops and body-boosting swimwear. A few oblique moves can easily add some definition to your side, so try these simple exercises! These exercises target the obliques (the side abdominal muscles). Shaping up this area does wonders in complimenting a toned tum and waist, so don't think that you've got the mid-section covered.